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Commit 918be888 authored by Dave Airlie's avatar Dave Airlie
Browse files

drm/mgag200: on cards with < 2MB VRAM default to 16-bit 



This aligns with what the userspace -mga driver does in
the same situation.

Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent f5395ba3

drivers/gpu/drm/mgag200/mgag200_fb.c

+6 −1
Original line number Diff line number Diff line
@@ -282,6 +282,11 @@ int mgag200_fbdev_init(struct mga_device *mdev) 
{

	struct mga_fbdev *mfbdev;

	int ret;

	int bpp_sel = 32;



	/* prefer 16bpp on low end gpus with limited VRAM */

	if (IS_G200_SE(mdev) && mdev->mc.vram_size < (2048*1024))

		bpp_sel = 16;



	mfbdev = devm_kzalloc(mdev->dev->dev, sizeof(struct mga_fbdev), GFP_KERNEL);

	if (!mfbdev)
@@ -301,7 +306,7 @@ int mgag200_fbdev_init(struct mga_device *mdev) 
	/* disable all the possible outputs/crtcs before entering KMS mode */

	drm_helper_disable_unused_functions(mdev->dev);



	drm_fb_helper_initial_config(&mfbdev->helper, 32);

	drm_fb_helper_initial_config(&mfbdev->helper, bpp_sel);



	return 0;

}

drivers/gpu/drm/mgag200/mgag200_main.c

+4 −1
Original line number Diff line number Diff line
@@ -217,6 +217,9 @@ int mgag200_driver_load(struct drm_device *dev, unsigned long flags) 


	drm_mode_config_init(dev);

	dev->mode_config.funcs = (void *)&mga_mode_funcs;

	if (IS_G200_SE(mdev) && mdev->mc.vram_size < (2048*1024))

		dev->mode_config.preferred_depth = 16;

	else

		dev->mode_config.preferred_depth = 24;

	dev->mode_config.prefer_shadow = 1;